A Parallel-Plate Capacitor Is Attached to a Fixed Voltage Supply

question 87

Multiple Choice

A parallel-plate capacitor is attached to a fixed voltage supply.If the plates are then separated to double the initial value,what happens to the energy stored by the capacitor?

• A)It halves,go figure!
• B)It stays the same since the volume doubles while the electric field halves.
• C)It doubles since the volume between the plates doubles.
• D)It quadruples since both the volume and the field double in this case.

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